Portable electric heater



FIG. 1 is a perspective view of a portable electric heater showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof, the left side being a mirror image;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a plan view of the top of the heater, on an enlarged scale, with the access door to the controls in the open position. 

The ornamental design for a portable electric heater, as shown and described. 